NTSB Identification: LAX84IA147.
The docket is stored on NTSB microfiche number 24530.
Nonscheduled 14 CFR
Incident occurred Friday, January 20, 1984 in REDDING, CA
Aircraft: PIPER PA-31-350, registration: N35479
Injuries: 5 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

WHILE TAXIING TO TAKEOFF, SMOKE WAS NOTED IN THE COCKPIT AREA, SHORTLY AFTER THE PLT ACTIVATED THE HEATER IGNITION SWITCH. THE PLT IMMEDIATELY STOPPED & SECURED THE ACFT & ASSISTED THE PASSENGERS IN DEPLANING. AN EXAM OF THE JANITROL HEATER, MODEL B4050, REVEALED THE AFT SECTION OF THE TUBE ASSEMBLY HAD CRACKED; THE INNER TUBE ASSEMBLY WAS CORRODED & A B-NUT WAS 'FINGER TIGHT.' ALSO, THERE WAS FIRE DAMAGE IN THE NOSE SECTION OF THE ACFT, NEAR THE HEATER. THE DIRECTOR OF MAINTENANCE SAID THAT AD-82-07-03, INSPECTION OF THE HEATER TUBE ASSEMBLY, WAS COMPLIED WITH ON 11/14/83.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

MAINTENANCE,INSPECTION..INADEQUATE..COMPANY MAINTENANCE PERSONNEL

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

AIR COND/HEATING/PRESSURIZATION..CRACKED

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

AIR COND/HEATING/PRESSURIZATION..LOOSE

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

FLUID,FUEL..LEAK

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

FUSELAGE..FIRE


Contributing Factors

AIR COND/HEATING/PRESSURIZATION..CORRODED

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